John Allain wrote:
.
> Not only that but I believe that Raytheon would rebuild Vaxes
> from the circuit description using advanced SMD and hybrid
> chips to make them something like 1/4 the size and weight
> of the non-gov. models.
Wow - now that would be something to add to the collection! Does
anybody on the list want to confess to owning such a beastie? If
so, please, don't be cruel - post a link to some pictures.
--Steve.
smj(at)spamfree.crash.com (lose spamfree to get through, m'kay?)
On May 27, 16:34, Greg Elkin wrote:
> Got given a couple of "Dyna 5" BA23-size QBUS enclosures a bit ago -
> a bit tatty (rusted & dirty, must try to get a sandblaster or
> something to see if they can be rescued)
> just looking through the cards, can't ID this one yet :
>
>
> dual height QBUS
> Baydel (http://www.baydel.com) logo on the handles, "Baydel ltd" "CCK
> 2789" "B01079 iss4 C1984 CTS-11" on the board.
> Any ideas? Didn't turn anything usefull up on Google, I've emailed
> Baydel support for a laugh...
Baydel were (are?) latterly quite well known for RAID systems; prior to
that they made (amongst other things) QBus floppy controllers, to
connect to SA800/850 drives. I have a couple of single-density ones
that emulate an RXV11 or a pair of RXV11s. I'd guess this board is an
emulation of an RXV21, to connect to SA800/850 drives. Power it up,
and see if it responds to the RXV21 addresses.
BTW, I found Baydel quite helpful when I wanted some information about
mine (labelled F11-311) -- but that was a decade ago and I don't know
if the same technical staff will still be there.
--
Pete Peter Turnbull
Network Manager
University of York
Hello,
I know that your request is over six months old, so you may no longer be
interested. Did you find the information you need on the 4052? I have a 1981
Tektronix catalog that has a one-page summary of the characteristics of this
device. Let me know if it is useful to you and I will send you a scanned
copy.
Tom Dodds
869 Milwaukee St.
Denver, Colorado 80206
Info request : Tek 4052
Hans B Pufal cctech(a)classiccmp.org
Tue Oct 8 10:51:19 2002
Previous message: OSI disk basic disk
Next message: scsi drive + misc. other stuff (free pentium machines & 10
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Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
----------------------------------------------------------------------------
----
We are exhibiting a Tektronix 4052 computer and I am looking for some
info on the beastie:
Year of introduction
Price at introduction
Memory size
Processor
Clock frequency
Tape capacity
Tape speed
Screen resolution
The web seems somewhat reluctant to divulge this info and I'd appreciate
your help.
Regards,
-- Hans B Pufal
Ok, I know NOTHING about openVMS. However, this just came up...
A friend of a friend offered me what he says is a complete set of OpenVMS
media. No manuals, just the media.
Several questions:
>From what I understand, isn't there some type of hobbyist free license for
openvms? If so, not sure why I should grab the media from him if I can just
download it. Or is there a value to getting the media from him, as to it
giving me the ability to purchase a license transfer or something... in
short, is there a special reason getting "real" media is desirable?
Lastly... he said it runs on vax's and pdp's. Not sure if he knows what he's
talking about, so I'll ask here. Could this run on my 11/44?
Thanks for any enlightenment!
Jay West
>What is the polarity of the 12V DC connector on the back of the machine?
The middle pin is positive and is commond to battery connector.
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Well, I must say I'm rather amazed at how quickly I got a response.
Within an hour of my post, two individuals (Steve Thatcher and Scott
LaBombard) both provided the information on the tantalum cap, and I
found the parts at DigiKey. Thanks guys!
I'm so glad to see some hope at getting the Altair back up and running.
When it sizzled popped and smoked, it was like an old friend had died.
If you could humor my electronic ignorance, what exactly IS a tantalum
cap and how does it differ from a normal capacitor? I was never before
aware that there could be more to a capacitor than plates (or foil) and
an electrolyte. How can a capacitor have a polarity?
Another question, does anyone know where I can find a replacement for
the two position front panel switches on the Altair which are marked
"AMERICAN U.S.A ST1-1" These are 2 pos 3 contact switches, and I've not
been able to find anything exactly the same dimensions. I am hoping
that this is some standard switch and I'm just not aware of it :-)
Also, I've come across rumers of Altair manuals online in PDF format.
Does anyone know where I could find such a thing?
I'm sure I'll have more questions once I get the poor machine put back
together and start trying to figure out the disk drives and controllers
:-) The machine was stored for over seven years in a barn wrapped in
plastic bags (not my decision! Don't burn me at the stake!) I wonder
how many more surprises I'm in for?
Went to a flea market today and I picked up and HP 29C in excellent
condition for $2.00
That's it but I just had to brag so there :)
Thank you
Francois
Many years ago Practical Electronics in the UK
published the design of a microprocessor-based system
called the CHAMP. If I remember rightly it was built
on Veroboard. I remember reading the articles in the
school library and wishing I could build one.
Did anyone ever build one of these ? Do the plans
still exist anywhere ?
Also, I'd like to re-acquaint myself with the Microtan
65 which was one of the first systems I ever owned.
Are there any systems still in existence ?
Dave.
The New Yahoo! Search - Faster. Easier. Bingo.
http://search.yahoo.com
What about the serial or parallel line printers that
used a type band/belt?
i used to see alot in the add's for pc's now thier
gone too.
i wouldn't mind finding one for the pc just to hear
the noise again;)
i remember the operating noises they made paper
clamp,line feed and the hammers hitting the paper -
the order of printing was(from the back of the printer
to the front of the paper)
hammer's,paper,ribbon then type band.
Bill
Message: 1
Date: Sat, 24 May 2003 18:33:01 -0700
From: J Forbes <jforbes2(a)mindspring.com>
To: Cassic Computing <cctech(a)classiccmp.org>
Subject: Re: Where have all the Selectrics gone?
Reply-To: cctech(a)classiccmp.org
> From: "Mike Ross" <mross666(a)hotmail.com>
> IBM made a bunch of printer terminals based around
the Selectric
typewriter
> - 1052, 2740, 2970 etc. Look in any old copy of
BYTE, and you'll also
find
> several vendors were selling 3rd party terminals
based around IBM
> Selectrics, often converted for ASCII/RS-232c
operation, as teletype
> alternatives.
>
> Where have they all gone?
The New Yahoo! Search - Faster. Easier. Bingo.
http://search.yahoo.com
